avr单片机与PC串口通讯

/* This source file is part of the ATMEL AVR32-UC3-SoftwareFramework-1.6.0 Release */ /*This file is prepared for Doxygen automatic documentation generation.*/ /*! \file ********************************************************************* * * \brief AT32UC3A EVK1100 board LEDs support package. * * This file contains definitions and services related to the LED features of * the EVK1100 board. * * - Compiler: IAR EWAVR32 and GNU GCC for AVR32 * - Supported devices: All AVR32 AT32UC3A devices can be used. * - AppNote: * * \author Atmel Corporation: http://www.atmel.com \n * Support and FAQ: http://support.atmel.no/ * ******************************************************************************/ /* Copyright (c) 2009 Atmel Corporation. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * 3. The name of Atmel may not be used to endorse or promote products derived * from this software without specific prior written permission. * * 4. This software may only be redistributed and used in connection with an Atmel * AVR product. * * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE * */ #include <avr32/io.h> #include "preprocessor.h" #include "compiler.h" #include "evk1100.h" #include "led.h" //! Structure describing LED hardware connections. typedef const struct { struct { U32 PORT; //!< LED GPIO port. U32 PIN_MASK; //!< Bit-mask of LED pin in GPIO port. } GPIO; //!< LED GPIO descriptor. struct { S32 CHANNEL; //!< LED PWM channel (< 0 if N/A). S32 FUNCTION; //!< LED pin PWM function (< 0 if N/A). } PWM; //!< LED PWM descriptor. } tLED_DESCRIPTOR; //! Hardware descriptors of all LEDs. static tLED_DESCRIPTOR LED_DESCRIPTOR[LED_COUNT] = { #define INSERT_LED_DESCRIPTOR(LED_NO, unused) \ { \ {LED##LED_NO##_GPIO / 32, 1 << (LED##LED_NO##_GPIO % 32)},\ {LED##LED_NO##_PWM, LED##LED_NO##_PWM_FUNCTION } \ }, MREPEAT(LED_COUNT, INSERT_LED_DESCRIPTOR, ~) #undef INSERT_LED_DESCRIPTOR }; //! Saved state of all LEDs. static volatile U32 LED_State = (1 << LED_COUNT) - 1; U32 LED_Read_Display(void) { return LED_State; } void LED_Display(U32 leds) { // Use the LED descriptors to get the connections of a given LED to the MCU. tLED_DESCRIPTOR *led_descriptor; volatile avr32_gpio_port_t *led_gpio_port; // Make sure only existing LEDs are specified. leds &= (1 << LED_COUNT) - 1; // Update the saved state of all LEDs with the requested changes. LED_State = leds; // For all LEDs... for (led_descriptor = &LED_DESCRIPTOR[0]; led_descriptor < LED_DESCRIPTOR + LED_COUNT; led_descriptor++) { // Set the LED to the requested state. led_gpio_port = &AVR32_GPIO.port[led_descriptor->GPIO.PORT]; if (leds & 1) { led_gpio_port->ovrc = led_descriptor->GPIO.PIN_MASK; } else { led_gpio_port->ovrs = led_descriptor->GPIO.PIN_MASK; } led_gpio_port->oders = led_descriptor->GPIO.PIN_MASK; led_gpio_port->gpers = led_descriptor->GPIO.PIN_MASK; leds >>= 1; } } U32 LED_Read_Display_Mask(U32 mask) { return Rd_bits(LED_State, mask); } void LED_Display_Mask(U32 mask, U32 leds) { // Use the LED descriptors to get the connections of a given LED to the MCU. tLED_DESCRIPTOR *led_descriptor = &LED_DESCRIPTOR[0] - 1; volatile avr32_gpio_port_t *led_gpio_port; U8 led_shift; // Make sure only existing LEDs are specified. mask &= (1 << LED_COUNT) - 1; // Update the saved state of all LEDs with the requested changes. Wr_bits(LED_State, mask, leds); // While there are specified LEDs left to manage... while (mask) { // Select the next specified LED and set it to the requested state. led_shift = 1 + ctz(mask); led_descriptor += led_shift; led_gpio_port = &AVR32_GPIO.port[led_descriptor->GPIO.PORT]; leds >>= led_shift - 1; if (leds & 1) { led_gpio_port->ovrc = led_descriptor->GPIO.PIN_MASK; } else { led_gpio_port->ovrs = led_descriptor->GPIO.PIN_MASK; } led_gpio_port->oders = led_descriptor->GPIO.PIN_MASK; led_gpio_port->gpers = led_descriptor->GPIO.PIN_MASK; leds >>= 1; mask >>= led_shift; } } Bool LED_Test(U32 leds) { return Tst_bits(LED_State, leds); } void LED_Off(U32 leds) { // Use the LED descriptors to get the connections of a given LED to the MCU. tLED_DESCRIPTOR *led_descriptor = &LED_DESCRIPTOR[0] - 1; volatile avr32_gpio_port_t *led_gpio_port; U8 led_shift; // Make sure only existing LEDs are specified. leds &= (1 << LED_COUNT) - 1; // Update the saved state of all LEDs with the requested changes. Clr_bits(LED_State, leds); // While there are specified LEDs left to manage... while (leds) { // Select the next specified LED and turn it off. led_shift = 1 + ctz(leds); led_descriptor += led_shift; led_gpio_port = &AVR32_GPIO.port[led_descriptor->GPIO.PORT]; led_gpio_port->ovrs = led_descriptor->GPIO.PIN_MASK; led_gpio_port->oders = led_descriptor->GPIO.PIN_MASK; led_gpio_port->gpers = led_descriptor->GPIO.PIN_MASK; leds >>= led_shift; } } void LED_On(U32 leds) { // Use the LED descriptors to get the connections of a given LED to the MCU. tLED_DESCRIPTOR *led_descriptor = &LED_DESCRIPTOR[0] - 1; volatile avr32_gpio_port_t *led_gpio_port; U8 led_shift; // Make sure only existing LEDs are specified. leds &= (1 << LED_COUNT) - 1; // Update the saved state of all LEDs with the requested changes. Set_bits(LED_State, leds); // While there are specified LEDs left to manage... while (leds) { // Select the next specified LED and turn it on. led_shift = 1 + ctz(leds); led_descriptor += led_shift; led_gpio_port = &AVR32_GPIO.port[led_descriptor->GPIO.PORT]; led_gpio_port->ovrc = led_descriptor->GPIO.PIN_MASK; led_gpio_port->oders = led_descriptor->GPIO.PIN_MASK; led_gpio_port->gpers = led_descriptor->GPIO.PIN_MASK; leds >>= led_shift; } } void LED_Toggle(U32 leds) { // Use the LED descriptors to get the connections of a given LED to the MCU. tLED_DESCRIPTOR *led_descriptor = &LED_DESCRIPTOR[0] - 1; volatile avr32_gpio_port_t *led_gpio_port; U8 led_shift; // Make sure only existing LEDs are specified. leds &= (1 << LED_COUNT) - 1; // Update the saved state of all LEDs with the requested changes. Tgl_bits(LED_State, leds); // While there are specified LEDs